Histological age prediction from the femur in a contemporary Dutch sample. The decrease of nonremodeled bone in the anterior cortex

This paper presents an uncomplicated and minimally invasive method for age-at-death determination in a contemporary Dutch (West European) population, by modifying the approach of assessment based on the age-related remodeling of bone tissue. In contrast to the usual "osteon count," a "non-remodeled tissue count" is undertaken. To optimize the method, proper zeroing of the polarization filter set of the microscope is essential. Instructions for setting the filters are given. A sample of femoral shaft segments totaling 162 individuals with ages ranging from 15 to 96 years is analyzed. Subperiosteal quantitative assessments are recorded at the most anterior point of the femoral shaft and also at points 25 degrees to the left and to the right of that point. Interobserver agreement in the assessments shows an acceptable degree of correlation. Bone remodeling with age does not progress in a linear, but in a curvilinear manner. Dependence of predicted age on nonremodeled surface counts in the analyzed areas of the anterior cortex of the femur appears to be significant. A set of regression equations is given. Sex can be ignored in age prediction. The small but statistically significant dependence of predicted age on cadaver length corresponds with the present strong secular increase in stature in the Netherlands. A concise catalogue with micrograph examples for every 10-year period in life is available upon request.     

Reduction of postmortem angiography-induced tissue edema by using polyethylene glycol as a contrast agent dissolver

Postmortem investigation is increasingly supported by computed tomography (CT) and magnetic resonance imaging, in which postmortem minimal invasive angiography has become important. The newly introduced approach using an aqueous contrast agent solution provided excellent vessel visualization but was suspected to possibly cause tissue edema artifacts in histological investigations. The aim of this study was to investigate on a porcine heart model whether it is possible to influence the contrast agent distribution within the soft tissue by changing its viscosity by dissolving the contrast agent in polyethylene glycol (PEG) as a matrix medium. High-resolution CT scans after injection showed that viscosities above c. 15 mPa s (65% PEG) prevented a contrast agent distribution within the capillary bed of the left ventricular myocardium. Thereby, the precondition of edema artifacts could be reduced. Its minimal invasive application on human corpses needs to be further adapted as the flow resistance is expected to differ between different tissues.     

Intimate partner violence research in the health care setting: what are appropriate and feasible methodological standards?

The past 20 years of research has exposed the profound cost of intimate partner violence (IPV) in health care problems and health care dollars for victims and bystanders. As a result, professional organizations encourage clinicians to identify IPV victims and to refer them to community resources. To date there is little evidence to show the value of these efforts, and many completed studies are criticized for methodological weaknesses. IPV studies are challenging to design, and the double-blind randomized controlled trial may be an impossible standard. To move forward, funders and study committees are encouraged to reassess the standards for IPV research methodologies.     

Intimate Partner Violence Victims’ Accuracy in Assessing their Risk of Re-abuse

Using four categories of accuracy (true positive, false positive, true negative, false negative), this study explored (1) how accurately intimate partner violence (IPV) victims are able to assess their risk of re-abuse; and (2) potential predictors of accuracy. Women seeking help for IPV (N = 246) rated the likelihood that they would experience physical re-abuse in the coming year and then reported 18 months later whether those risks had been realized. Victim assessments were more likely to be right than wrong, and were subject to neither a pessimistic nor optimistic bias. In the multivariate analysis, significant/marginally significant predictors of the accuracy categories were the history of violence from this and former partners, level of substance use, PTSD symptoms, and the recency of the violence. Among the more robust findings were the connection between level of stalking and true positives, and between substance use and false negatives. This study suggests that victim assessments have significant potential to inform practice, and deserve further exploration.

Crisis leadership styles—Bligh versus Gillard: a content analysis of Twitter posts on the Queensland floods

This paper presents a quantitative and qualitative content analysis of Twitter posts mentioning Queensland Premier Anna Bligh and Australian Prime Minister Julia Gillard during the 2011 Queensland flood crisis. The contrast in the perceived styles of the two leaders is analysed using the theory of transformational leadership as a framework. The implications for effective leadership communication in a crisis are discussed, notably, strategies for instilling pride and gaining respect and trust. The study also highlights the emerging role of Twitter in setting the media agenda at times of fast‐breaking news. Copyright © 2012 John Wiley & Sons, Ltd.     

The Role of Policy Brokers: The Case of Biotechnology in Kenya

Debates about biotechnology continue to be polarized despite its potential to improve the living standards of the poor in Sub‐Saharan Africa. In the backdrop of this polarized scenario, this paper asked, is there a place for brokers in bringing about a productive debate that is pro‐development? The paper argued that if potential intermediaries are analyzed from the perspective of understanding their role and stakeholding in the regulatory change process, this may help breakout the current polarized anti‐ and pro‐biotechnology debates and thereby focus on how to enable productive biotechnology development. Informed by insights from innovation brokering, the functions of brokers in biotechnology regulation are analyzed through the lens of organizations involved in agricultural biotechnology debates in Kenya. The analysis found that policy brokering function attracts varying opportunities and challenges appropriate for informing relevant policy. The paper drew lessons from Kenya's experience to inform a productive policy brokering model for biotechnology regulation.     

Heat Waves,Droughts, and Preferences for Environmental Policy

Using data from a new household survey on environmental attitudes, behaviors, and policy preferences, we find that current weather conditions affect preferences for environmental regulation. Individuals who have recently experienced extreme weather (heat waves or droughts) are more likely to support laws to protect the environment. We find evidence that the channel through which weather conditions affect policy preference is via perceptions of the importance of the issue of global warming. Furthermore, environmentalists and individuals who consult more sources of news are less likely to have their attitudes toward global warming changed by current weather conditions. These findings suggest that communication and education emphasizing consequences of climate change salient to the individual's circumstances may be the most effective in changing attitudes of those least likely to support proenvironment policy. In addition, the timing of policy introduction could influence its success.